A C++ template library for embedded applications
Designed and maintained by
John Wellbelove
MIT licensed
Join the ETL community

Compilers


The library is intended to be used on multiple platforms and devices. Not every single combination of
compiler/IDE/device/library template have been, or can realistically be,  checked. A set of profiles have been created
for the most popular setups.
If you have issues porting the library to your platform then contact me, and I will do my best to resolve any
incompatibilities.

If you have no issues, or have solved it by yourself then please let me know so that I may add information about it to
this page.

I can be contacted here.

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Visual Studio
Has been compiled under VS2015 & VS2017.
No known issues.

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GCC
Has been compiled under GNU GCC  on Windows & Linux.
No known issues, apart from early versions of GCC that may need to define the macro __STDC_LIMIT_MACROS in the
project properties.

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Keil uVision
ARM
Define the macro __STDC_LIMIT_MACROS in the project properties.
Compiled with version 5 & 6 ARM compilers.
No known issues.
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TI Code Composer
MPS430
Define the macro __STDC_LIMIT_MACROS in the project properties.

In TI projects you have the choice between EABI and COFF file formats.
There is a known issue with the COFF format when creating static libraries that use templates. You may find that the
linker will complain about 'undefined symbols'. The only known workaround is to declare a dummy type in the main
application that uses the template with the same parameter types.

e.g.
If your static library uses etl::vector<MyType, N> then declare a dummy type etl::vector of the same type in the
application.

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IAR Embedded Workbench
ARM
Define the macro __STDC_LIMIT_MACROS in the project properties.
No known issues.

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Segger Embedded Studio
ARM
If using STLPort then the macro ETL_STLPORT must be defined in the profile..

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Arduino
Arduino IDE
Visual Studio with Visual Micro extension
The Arduino programming platform is not supplied with an implementation of the STL. The ETL makes use of some
features of the STL to compile, and therefore  either one must be acquired or the project is compiled with
ETL_NO_STL defined.
A suitable STL implementation may be downloaded from the Arduino library resource; It is called ArduinoSTL.
Add #include <ArduinoSTL.h> to the start of every file that uses the ETL.
Remember to add the directory to the include path.

The alternative option is to compile with ETL_NO_STL defined, if the STL is not used in your project.

Partially tested for Zero, Uno, Yún, Mega, Industrial 101 and Leonardo boards using test_embedded_compile.cpp

Issues
Zero
Arduino101
TinyTile
<algorithm> must be edited to move the template function iter_swap before the declaration of swap_ranges.
The template class variant will not currently compile unless the header file is reither enamed or the include path
somehow altered, as the platform also defines  a header named variant.h.

Due
Fails to find ArduinoSTL.h even though it is present.
If ArduinoSTL.h is removed, then fails with printf has not been declared.

General
It may be necessary to add the following lines to the beginning of the file.
#undef min
#undef max